diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/20.n2/10.brainstorming/textbook.en.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/20.n2/10.brainstorming/textbook.en.md
index f81e451ff..0a8e7b551 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/20.n2/10.brainstorming/textbook.en.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/20.n2/10.brainstorming/textbook.en.md
@@ -5,7 +5,7 @@ routable: true
 visible: false
 lessons:
     - slug: brainstorming-g12-classical-mechanics
-      order: 2
+      order: 3
     - slug: brainstorming-234-classical-mechanics
       order: 1
 ---